<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2023/4/23
 * Time: 13:16
 */

require('../extend/phpMQTT/phpMQTT.php');
class Test{

    public function __construct()
    {
        echo 111;exit;
    }
}
$cars = \think\Db::name('car')->field('IMEI,pinyin')->where("IMEI!=''")->select();
print_r($cars);exit;